70319291221 has 4 divisors (see below), whose sum is σ = 70323019200. Its totient is φ = 70315563244.

The previous prime is 70319291219. The next prime is 70319291239. The reversal of 70319291221 is 12219291307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70319291221 - 2¹ = 70319291219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70319291621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835551 + ... + 1873468.

It is an arithmetic number, because the mean of its divisors is an integer number (17580754800).

Almost surely, 2^70319291221 is an apocalyptic number.

It is an amenable number.

70319291221 is a deficient number, since it is larger than the sum of its proper divisors (3727979).

70319291221 is a wasteful number, since it uses less digits than its factorization.

70319291221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727978.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 70319291221 in words is "seventy billion, three hundred nineteen million, two hundred ninety-one thousand, two hundred twenty-one".